docs: mark DATA-DB-004 as done, update roadmap

docs/roadmap/ROADMAP.yaml

@@ -13,7 +13,6 @@ notes:
   - Pre-alpha policy: we may cut or replace old features without backward compatibility until alpha is declared.
   - Alpha migration policy: once alpha is declared, compatibility only needs to move forward; backward migrations are not required.
 priority_queue:
-  - DATA-DB-004
   - CONV-001
   - EXEC-002
   - DATA-DB-003
@@ -26,6 +25,7 @@ priority_queue:
   - GCF-001
   - DATA-DB-006
 recently_completed:
+  - DATA-DB-004
   - DATA-DB-002
   - DATA-DB-001
   - PORTFOLIO-003
@@ -51,7 +51,6 @@ recently_completed:
 states:
   backlog:
     - DATA-DB-003
-    - DATA-DB-004
     - DATA-DB-005
     - DATA-DB-006
     - CONV-001
@@ -64,6 +63,7 @@ states:
     - GCF-001
   in_progress: []
   done:
+    - DATA-DB-004
     - DATA-DB-002
     - DATA-DB-001
     - PORTFOLIO-003